20146113673 has 12 divisors (see below), whose sum is σ = 23438972052. Its totient is φ = 17265373440.

The previous prime is 20146113671. The next prime is 20146113719. The reversal of 20146113673 is 37631164102.

It can be written as a sum of positive squares in 2 ways, for example, as 1176009849 + 18970103824 = 34293^2 + 137732^2 .

It is not a de Polignac number, because 20146113673 - 2¹ = 20146113671 is a prime.

It is a super-2 number, since 2×20146113673² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20146113671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320061 + ... + 377797.

It is an arithmetic number, because the mean of its divisors is an integer number (1953247671).

Almost surely, 2^20146113673 is an apocalyptic number.

It is an amenable number.

20146113673 is a deficient number, since it is larger than the sum of its proper divisors (3292858379).

20146113673 is an equidigital number, since it uses as much as digits as its factorization.

20146113673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64872 (or 64865 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

Adding to 20146113673 its reverse (37631164102), we get a palindrome (57777277775).

The spelling of 20146113673 in words is "twenty billion, one hundred forty-six million, one hundred thirteen thousand, six hundred seventy-three".